Trapezoid: 18703
In the ABCD trapezoid: | AD | = | CD | = | BC | a | AB | = | AC |. Determine the size of the delta angle.
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- system of equations
- expression of a variable from the formula
- planimetrics
- right triangle
- triangle
- trapezoid
- goniometry and trigonometry
- sine
- cosine
Units of physical quantities:
Grade of the word problem:
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